Characteristic analysis of vehicle rollover accidents: Rollover scenarios and prediction/warning

Han, Inhwan; Rho, Kyungtae

doi:10.1007/s12239-017-0045-1

Cited by 20 publications

(7 citation statements)

References 5 publications

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“…A lateral offset distance of more than 30 cm is usually suggestive of a vehicle sideslip. Roll angle, sideslip angle, side friction coefficient, and yaw angle are additional important indicators for assessing vehicle lateral stability [40][41][42][43].…”

Section: Literature Reviewmentioning

confidence: 99%

Influence of Snowy and Icy Weather on Vehicle Sideslip and Rollover: A Simulation Approach

Wang,

Zhao,

et al. 2024

Sustainability

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Many northern hemisphere countries have experienced exceptionally heavy snow, blizzards, and cold snaps in recent years, causing considerable public concern about the high crash rate and safety issues in road traffic. This study used the CarSim dynamics simulation to recreate several vehicle driving scenarios in snow and ice conditions. To explore the influence of speed, curve radius, and road adhesion coefficient on vehicle sideslip and rollover, four lateral stability evaluation indicators, namely lateral offset, lateral acceleration, yaw rate, and roll angle, are chosen. Unfavorable combinations of these factors result in vehicle deviation from their intended trajectory and dramatically increase the likelihood of sideslip and rollover incidents. In particular, road adhesion coefficients ranging from 0.10 to 0.20 lead first to sideslip, while coefficients of 0.21 to 0.35 lead straight to rollover. Additionally, in the initial segment of the curve, cars are more susceptible to lateral instability. Curve radius has the greatest influence on sideslip when the three influencing factors are combined, while speed is the key component affecting rollover incidents. Smaller curve radii and higher speeds are major factors in such incidents. The results are helpful for proper road alignment parameter selection and dynamic speed-limit measures. This can provide a theoretical basis for traffic management departments to take targeted measures, which is of great significance to improving road traffic safety in snowy and icy weather.

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Section: Literature Reviewmentioning

confidence: 99%

Influence of Snowy and Icy Weather on Vehicle Sideslip and Rollover: A Simulation Approach

Wang,

Zhao,

et al. 2024

Sustainability

View full text Add to dashboard Cite

show abstract

“…Many causes cause rollovers, which should be clearly identified to limit this. According to Han and Rho, rollover mechanisms can be divided into 2 types: tripped and untripped [ 2 ]. However, the tripped condition occurs more rarely than others.…”

Section: Introductionmentioning

confidence: 99%

Assessing the dependence of vehicle rollover on many factors based on new 4D graphs

Nguyen

2023

PLoS ONE

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In this paper, the author proposes a novel solution to evaluate the dependence between the maximum roll angle and the minimum vertical force at the wheel on the vehicle’s height and speed. 4D graphs that fully and clearly describe the dependence between parameters are used to replace conventional 2D and 3D graphs. A complex dynamic model is established to describe the vehicle’s oscillations when steering. Calculations and simulations are performed using Simulink® software with many specific cases. In all cases, the input values such as steering angle, speed, and distance from RA (roll axis) to CG (the center of gravity), all change flexibly. According to the paper’s findings, the roll angle will rise once speed or height increases. In addition, the maximum roll angle increases significantly once both the velocity and the height increase. This causes the vertical force at the wheel to drop suddenly, and rollover may occur if this value reduces to zero. 4D graphs provide a more specific and intuitive assessment of vehicle rollovers.

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“…1 Occasionally, some accidents happen due to being tripped by some objects on the road with low frequency. 2 In Ref., 3 Han and Rho divide rollover accidents into two groups, including untripped and tripped, which are mentioned by Jin et al in Ref. 2 However, these groups are further subdivided, including ramp and ditch (for untripped) and curb and soil (for tripped).…”

Section: Introductionmentioning

confidence: 99%

“…2 However, these groups are further subdivided, including ramp and ditch (for untripped) and curb and soil (for tripped). 3 Adverse weather conditions also have a negative effect on this phenomenon, according to Alrejjal et al 4 and He et al 5 In addition, factors related to the car's dimensions, such as mass, the centre of gravity, track width, influence this issue. This is mentioned in Ref.…”

Section: Introductionmentioning

confidence: 99%

Proposing a novel fuzzy control algorithm for automotive active stabilizer bars based on views of roll stability and ride comfort

Nguyen

2023

Proceedings of the Institution of Mechanical Engineers, Part K:

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Using stabilizer bars in cars to limit rollover is a necessity applied to many vehicles today. In this article, the author proposes using a new fuzzy method to control the hydraulic stabilizer bars. Previous studies only focused on improving the roll stability of cars, while this article focuses on ensuring both the roll stability and ride comfort of the vehicle, which is considered the new contribution of the article. Vehicle oscillations are described through a complex nonlinear dynamic model. The MATLAB® application performs the simulation with two specific cases, including fish-hook steering and J-turn steering. According to the findings of this research, the roll angle value is significantly reduced when using active stabilizer bars directed by the novel algorithm. In addition, the risk of the rollover was also strongly reduced for both simulations (there are four-speed thresholds used in each case). For the first case, rollover does not occur when the car utilizes active stabilizer bars, even when travelling at v4 = 100 (km/h). In the other case, the rollover occurs only for the Active situation when travelling at a very high speed. In contrast, this phenomenon occurs in the None situation at v1 and the Passive situation at v2. The results found from this work help to evaluate the performance of the fuzzy control algorithm for active stabilizer bars.

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Characteristic analysis of vehicle rollover accidents: Rollover scenarios and prediction/warning

Cited by 20 publications

References 5 publications

Influence of Snowy and Icy Weather on Vehicle Sideslip and Rollover: A Simulation Approach

Influence of Snowy and Icy Weather on Vehicle Sideslip and Rollover: A Simulation Approach

Assessing the dependence of vehicle rollover on many factors based on new 4D graphs

Proposing a novel fuzzy control algorithm for automotive active stabilizer bars based on views of roll stability and ride comfort

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